Noticed the fuel mixture was worst upon today's start up but it cleaned itself up after 35 secs.

Ford needs a ECU flash update to clean this poor a/f up.

Come on Ford I know your reading...

 

I think I read that the Ecoboost engine has a special shutdown mode that lets the turbos cool down gradually, keeps pumping oil to them. There has been after market kits for older trucks to do the same thing.

Bill

 

I think maybe you aren't understanding that it appears they have done this on purpose. Throwing more fuel at it gets the turbos spinning and warmed up at first start. That way there is some heat in them so when an abusive driver turns the corner and mashes the gas they aren't completely cold.
Or hell, maybe im not understanding it correctly, but I can see no other logical explanation.

 

The ecoboost i drove shut off after i drove it. No delay there.

 

Ummm, no, you either didn't read that, or what you read is wrong.

 

The Ford tech guy told me that's why they're watercooled & plumbed the way they are, they continue to cool after shutoff by thermosyphon. No oil flow after engine is shut off.

 

I don't know about startup, but my tailpipe is full of soot. Maybe it is like a Diesel.

 

I would like to add that my 2011 eco boost is making alot of black smoke when first started after sitting all night.. It cleans up in about 10 seconds.. It only has 650km on it..

 

I have a 2011 F150 with the 3.5 ecoboost. I have noticed when I start it in the morning (cold start) I get some black smoke that lasts about 10-15 seconds, after that everything appears to be normal. I have taken it back to the dealership and explained the situation to them and they are totally unaware of what causes the smoke and have nothing in their service information stating if this is a normal process or not. Does anyone know for sure? Dealership seems to be clueless.

 

Mine has no smoke, and very little soot or dirt in the tail pipe. Must be a cold weather/start deal.

 

All turbos used for pulling heavy object should be allowed to cool down by idle the engine a few minutes. We have to do this on our diesels. The barrings and the actuators need a little time to cool down. This will save you a boat load of money down the road.

Cold startups do burn more fuel to allow the engine/turbo to heat up.

 

Typical DI stuff here, my mazdaspeed was the same way, tailpipe were sooted up.

 

I also read a recent article where Continental worked on a new DI setup that cures the cold-start soot problem using solenoid technology. So apparently, the OEM's are aware of this issue and it seems the heart of the issue is the solenoid actuated injectors and how close to the minimal amount of fuel they can get when lighting off a cold engine. It seems like other than Continental's solution, everyone else is looking at Piezo style injectors like in the new Diesel motors to get the fuel metering accuracy for cold starts.

 

Mine does this too exactly. I have a 2012 f-150 ecoboost with 5000 miles. Dealership mentioned it was a standard operation of this engine.

 

i noticed this right off the bat with my ecoboost, 6000 miles on it now..nowhere near as bad as my Grand National though, tailpipes are black inside